1) Unplug the printer power cable. Count to 10. (Be sure that all of the cartridges are properly installed, which generally has to be done with the power on regardless of whether you have a laser printer or n inkjet printer.)Plug it back in wait until the printer is done with its startup. Check the printer. If the printer is working, stop.
2) If #1 doesn't fix the problem, unplug the router power cable. Count to 10. Plug it back in. The router will take time to run through its startup. Do not panic. It might take 10 minutes or more depending upon the router and your cable company. Leave your TV on, and eventually, you will see if working again. Check the printer. If the printer is working, stop.
3) If the printer is still not working, run printer diagnostics per the manufacturer. The comments about the "drum" only apply if you have a laser printer, rather than an inkjet printer. If you tell us the printer manufacturer and model, someone may have specific advice. If after running the diagnostics, the printer is working, stop.
4) If the printer is still not working, give us more information.
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